RESUMO
Instrumented root canals of extracted human teeth were inoculated with known pulpal bacterial isolates. The inoculated teeth were immersed in the appropriate culture media and incubated at 37 degrees C for varying periods. Streptococci multiplied in the root canals and invaded the radicular dentinal tubules. The extent of bacterial invasion was time-dependent. This experimental model of bacterial invasion was time-dependent. This experimental model may be useful in investigating the effect of intra-canal medicaments on microorganisms lodged in the pulpal dentin wall.
Assuntos
Bactérias/citologia , Polpa Dentária/microbiologia , Dentina/microbiologia , Adulto , Idoso , Enterococcus faecalis/citologia , Humanos , Pessoa de Meia-Idade , Modelos Biológicos , Peptococcus/citologia , Prevotella melaninogenica/citologia , Streptococcus sanguis/citologia , Fatores de TempoRESUMO
An unusual case of actinomycosis in the oral cavity is reported. The strict anaerobic qualities of Actinomyces israelii make laboratory culturing and growing of this organism difficult. Accordingly, the diagnosis was based on the histopathologic report. Because of the atypical clinical presentation, i.e., lack of any discharging sinus tract on the skin surface, and the histopathologic reports, it was postulated that the actinomycosis was superimposed on an existing granulomatous tissue.
